Quit habits strictly. Seems like you have oral submucous fibrosis (osmf). Kindly consult an oral & maxillo facial surgeon in person for further suggestion. We need more investigations to decide upon treatment. You may need conservative or surgical management for mouth opening depending upon the stage of osmf, mouth opening exercise & side to side movement of the jaw. As for now advice c. Becosules 5 cap (enriched with vitamin a, vitamin b & vitamin e specifically), for five days in the morning after meals. You may consult me in person. Dental tips: - visit a dentist
every six months for cleaning and a thorough dental check-up. Limit sugary food to avoid tooth decay
. Gargle your mouth thoroughly after every meal. Scrub gently to clean your tongue with a tongue cleaner. Floss all your teeth inter dentally & brush twice daily, morning & night, up & down short vertical strokes, with ultra-soft bristles, indicator brush.